3EPE

Crystal Structure of the GluR4 Ligand-Binding domain in complex with glutamate

X-RAY DIFFRACTION

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Crystallization

Crystalization Experiments
ID	Method	pH	Temperature	Details
1	VAPOR DIFFUSION, HANGING DROP	4.6	291	25% PEG 4000, 0.1M Na-Acetate pH 4.6, 0.2M Ammonium Sulphate, VAPOR DIFFUSION, HANGING DROP, temperature 291K

Crystal Properties
Matthews coefficient	Solvent content
2.85	56.86

Crystal Data

Unit Cell
Length ( Å )	Angle ( ˚ )
a = 47.374	α = 90
b = 105.124	β = 97.26
c = 66.336	γ = 90

Symmetry
Space Group	P 1 21 1

Diffraction

Diffraction Experiment
ID #	Crystal ID	Scattering Type	Data Collection Temperature	Detector	Detector Type	Details	Collection Date	Monochromator	Protocol
1	1	x-ray	100	IMAGE PLATE	MAR scanner 345 mm plate		2005-05-25	M	SINGLE WAVELENGTH

Radiation Source
ID #	Source	Type	Wavelength List	Synchrotron Site	Beamline
1	ROTATING ANODE	RIGAKU RUH3R	1.54

Data Collection

Overall
ID #	Resolution (High)	Resolution (Low)	Percent Possible (Observed)	Net I Over Average Sigma (I)	Redundancy	Number Reflections (All)	Number Reflections (Observed)	Observed Criterion Sigma (F)	Observed Criterion Sigma (I)	B (Isotropic) From Wilson Plot
1	1.85	19.27	96.3			54964	52938		-3

Highest Resolution Shell
ID #	Resolution (High)	Resolution (Low)	Percent Possible (All)	Percent Possible (Observed)	Mean I Over Sigma (Observed)	Redundancy	Number Unique Reflections (All)
	1.85	1.93	94.1

Refinement

Statistics
Diffraction ID	Structure Solution Method	Cross Validation method	Starting model	Resolution (High)	Resolution (Low)	Number Reflections (Observed)	Number Reflections (R-Free)	Percent Reflections (Observed)	R-Factor (Observed)	R-Work	R-Free	R-Free Selection Details	Mean Isotropic B
X-RAY DIFFRACTION	MOLECULAR REPLACEMENT	THROUGHOUT	1FTJ	1.85	19.27	50144	2790	100	0.19222	0.19061	0.22038	THIN SHELLS	15.912

Temperature Factor Modeling
Anisotropic B[1][1]	Anisotropic B[1][2]	Anisotropic B[1][3]	Anisotropic B[2][2]	Anisotropic B[2][3]	Anisotropic B[3][3]
-0.03			0.02		0.01

RMS Deviations
Key	Refinement Restraint Deviation
r_dihedral_angle_2_deg	32.48
r_dihedral_angle_4_deg	16.733
r_dihedral_angle_3_deg	13.467
r_dihedral_angle_1_deg	5.701
r_scangle_it	2.475
r_scbond_it	1.508
r_angle_refined_deg	1.125
r_mcangle_it	0.757
r_mcbond_it	0.414
r_nbtor_refined	0.299
r_nbd_refined	0.199
r_symmetry_hbond_refined	0.175
r_symmetry_vdw_refined	0.165
r_xyhbond_nbd_refined	0.109
r_chiral_restr	0.084
r_bond_refined_d	0.009
r_gen_planes_refined	0.004

Non-Hydrogen Atoms Used in Refinement
Non-Hydrogen Atoms	Number
Protein Atoms	4028
Nucleic Acid Atoms
Solvent Atoms	310
Heterogen Atoms	20

Software

Software
Software Name	Purpose
REFMAC	refinement
CNS	refinement
MAR345dtb	data collection
XDS	data reduction
XSCALE	data scaling
CNS	phasing